Inorganic composition, process of preparation and method of use

Abstract

A coagulant which is the reaction product of a trivalent metal salt, excluding chromium salts, an acid phosphorous compound and an aluminum hydroxy chloride, and a process for preparing such coagulant. This coagulant may be effectively used to remove suspended solids and various impurities in most water treatment applications.

What is claimed is:  
     
         1 . A composition comprising the reaction product of a trivalent metal salt other than chromium salts, an acid phosphorous compound, and an aluminum hydroxy chloride.  
     
     
         2 . The composition of  claim 1  wherein the trivalent metal salt is a Group 8 trivalent metal salt.  
     
     
         3 . The composition of  claim 2  wherein the trivalent metal salt is a ferric metal salt.  
     
     
         4 . The composition of  claim 3  wherein the trivalent metal salt is a ferric halide.  
     
     
         5 . The composition of  claim 3  wherein the trivalent metal salt is selected from the group consisting of FeCl 3 , Fe(SO 4 ) 3 , FeBr 3  and Fe(NO 3 ) 3 , and mixtures thereof  
     
     
         6 . The composition of  claim 2  wherein the trivalent metal salt and is a blend of one or more Group 8 trivalent metal salts.  
     
     
         7 . The composition of  claim 2  wherein the acid phosphorous compound is selected from the group consisting of acid phosphites, acid phosphates and phosphonic acid.  
     
     
         8 . The composition of  claim 7  wherein the acid phosphite is phosphorous acid and the acid phosphate is phosphoric acid.  
     
     
         9 . The composition of  claim 7  where the acid phosphorous compound is selected form the group of (Al(H 2 PO 4 ) 3 .XH 2 O), H 3 PO 4 , H 3 PO 3 , NaH 2 PO 4 , Na 2 HPO 4 , CH 3 C(OH)(PO 3 H 2 ), H 2 C═CHP(O)(OH) 2 , (CH 3 O 2 )P 2 (O)H, (NH 4 ) 2 HPO 4 , 
 NH 4 H 2 PO 4 , K 2 HPO 4  and KH 2 PO 4 .  
 
     
     
         10 . The composition of  claim 7  wherein the acid phosphorous compound is of the formula M n H x PO q , where M=a cation such as a metal or ammonium, n=0 to 2, x=1 to 3, and q=3 or 4.  
     
     
         11 . The composition of  claim 2  wherein the aluminum hydroxy chloride is of the chemical formula Al 2 (OH) y Cl z  where y=0.1 to 5 and z=1 to 5.9.  
     
     
         12 . The composition of  claim 11  wherein y=1.8 to 5 and z=1 to 4.2.  
     
     
         13 . The composition of  claim 2  wherein the trivalent metal salt is selected from the group of FeCl 3 , Fe (SO 4 ) 3 , FeBr 3  and Fe(NO 3 ) 3 , the acid phosphorous compound is selected from the group (Al(H 2 PO 4 ) 3 .XH 2 O), H 3 PO 4 , H 3 PO 3 , NaH 2 PO 4 , Na 2 HPO 4  (NH) 2 HPO 4 , NH 4 H 2 PO 4  and K 2 HPO and KH 2 PO 4 , and the aluminum hydroxy chloride is of the chemical formula Al 2 (OH) y Cl z  where y=1.8 to 5 and z=1 to 4.2.  
     
     
         14 . The composition of  claim 13  wherein the trivalent metal salt is FeCl 3 , the acid phosphorous compound is (Al(H 2 PO 4 ) 3 .XH 2 O), and the aluminum hydroxy chloride is Al 2 (OH) 5 Cl.  
     
     
         15 . The composition of  claim 14  wherein the volume of FeCl 3  (about 40% active raw material in water) is 3 to 30 parts, the volume of (Al(H 2 PO 4 ) 3 .XH 2 O), (about 50 wt % in water) is 0.5 to 10 parts, and the volume of Al 2 (OH) 5 Cl (about 50 wt % in water) is 5 to 20 parts.  
     
     
         16 . The composition of  claim 15  wherein the volume of FeCl 3  is 10 parts, the volume of (Al(H 2 PO 4 ) 3 .XH 2 O) is 3 parts, and the volume of Al 2  (OH) 5 Cl is 5 parts.  
     
     
         17 . The composition of  claim 2  wherein AlCl 3  is utilized as the trivalent metal salt.  
     
     
         18 . A composition having an aluminum-27 NMR peak at ca. −26.2 ppm relative to aluminum oxide at 0 ppm.  
     
     
         19 . The composition of  claim 18  wherein the composition is reaction product of iron (III) chloride, monoaluminum phosphate and aluminum chlorohydrate.  
     
     
         20 . A blend comprising the product of AlCl 3 , FeCl 3 , and an acid phosphorous compound.  
     
     
         21 . The blend of  claim 20  wherein the acid phosphorous compound is (Al(H 2 PO 4 ) 3 .XH 2 O).  
     
     
         22 . The composition of  claim 2  further comprising the addition of CaCl 2  and EPI-DMA polyamine.  
     
     
         23 . The composition of  claim 2  further comprising the addition of p-DMDAAC.  
     
     
         24 . A composition comprising the reaction product of a trivalent metal salt other than chromium salts, an acid phosphorous compound, and an aluminum hydroxy chloride, where: 
 a. the trivalent metal salt is one or more of the group of FeCl 3 , Fe (SO 4 ) 3 , FeBr 3 , and Fe(NO) 3 ;    b. the acid phosphorous compound is selected from the group consisting of (Al(H 2 PO 4 ) 3 .XH 2 O), H 3 PO 4 , H 3 PO 3 , NaH 2 PO 4 , Na 2 HPO 4 , CH 3 C(OH)(PO 3 H 2 ), H 2 C═CHP(O)(OH) 2 , (CH 3 O 2 )P 2 (O)H, (NH 4 ) 2 HPO 4 , NH 4 H 2 PO 4 , K 2 HPO 4  and KH 2 PO 4 ; and    c. the aluminum hydroxy chloride is one of the formula Al 2 (OH) y Cl, where y=1.8 to 5 and z=1 to 4.2.    
     
     
         25 . The composition of  claim 24  wherein the trivalent metal salt is FeCl 3 , the acid phosphorous compound is (Al(H 2 PO 4 ) 3 .XH 2 O), and the aluminum hydroxy chloride is Al 2 (OH) 5 Cl.  
     
     
         26 . The composition of  claim 23  wherein the trivalent metal salt is FeCl 3  (about 40% active raw material in water) in a volume of 10 parts water, the acid phosphorous compound is (Al(H 2 PO 4 ) 3 .XH 2 O), (about 50 wt % in water) in a volume of 3 parts, the aluminum hydroxy chloride is Al 2 (OH) 5 Cl (about 50 wt % in water) in a volume 5 of 5 parts, and: 
 (a) the FeCl 3  is diluted by 10 to 40% prior to the preparation of the composition and the subsequent addition of p-DMDAAC; or  
 (b) the composition is diluted by 10 to 40% prior to the addition of the p-DMDAAC.  
 
     
     
         27 . The composition of  claim 23  wherein the trivalent metal salt is FeCl 3  (about 40% active raw material in water) in a. volume of 10 parts, the acid phosphorous compound is phosphoric acid (about 85 wt % in water) in a volume of 3 parts, the aluminum hydroxy chloride is Al 2 (OH) 5 Cl (about 50 wt % in water) in a volume of 5 parts, and: 
 (a) the FeCl 3  is diluted by 10 to 80% prior to the preparation of the composition and the subsequent addition of the p-DMDAAC; or  
 (b) the composition is diluted by 10 to 80% prior to the addition of the p-DMDAAC.  
 
     
     
         28 . A process for the production of a reaction product comprising blending an aqueous solution of a Group 8 trivalent metal salt, an acid phosphorous compound and an aluminum hydroxy chloride.  
     
     
         29 . The process of  claim 28  wherein the trivalent metal salt is first blended with the acid phosphorous compound, and the aluminum hydroxy chloride is subsequently added thereto.  
     
     
         30 . The process of  claim 28  wherein the trivalent metal salt is first blended with the aluminum hydroxy chloride, and the acid phosphorous compound is subsequently added thereto.  
     
     
         31 . The process of  claim 28  wherein the trivalent metal salt is selected from the group consisting of FeCl 3 , Fe(SO 4 ) 3 , FeBr 3 , and Fe(NO 3 ) and mixtures thereof.  
     
     
         32 . The process of  claim 28  wherein the acid phosphorous compound is selected from the group consisting of (Al(H 2 PO 4 ) 3 .XH 2 O), H 3 PO 4 , H 3 PO 3 , NaH 2 PO 4 , Na 2 HPO 4 , CH 3 C(OH), (PO 3 H 2 ), H 2 C═CHP(O)(OH) 2 , (CH 3 O 2 )P 2 (O)H, (NH 4 ) 2 HPO 4 , NH 4 H 2 PO 4 , NH 4 HPO 4 , K 2 HPO 4  and KH 2 PO 4 .  
     
     
         33 . The process of  claim 28  wherein the aluminum hydroxy chloride is one of the formula Al 2 (OH) y Cl z  where y=0.1 to 5 and z=1 to 5.9.  
     
     
         34 . The process of  claim 33  wherein y=1.8 to 5 and z=1 to 4.2.  
     
     
         35 . The process of  claim 28  further comprising the addition of CaCl 2  and Epi-DMA polyamine.  
     
     
         36 . The process of  claim 28  further comprising the addition of p-DMDAAC.  
     
     
         37 . The process of  claim 36  wherein the trivalent metal salt is FeCl 3  (about 40% active raw material in water) in a volume of 10 parts, and the acid phosphorous compound is (Al(H 2 PO 4 ) 3 .XH 2 O) (about 50 wt % in water) in a volume of 3 parts, the aluminum hydroxy chloride is Al 2 (OH) 5 Cl (about 50 wt % in water) in a volume of 5 parts, and: 
 (a) the FeCl 3  is diluted by 10 to 40% prior to the preparation of the composition of the composition and the subsequent addition of p-DMDAAC; or  
 (b) the composition is diluted by 10 to 40% prior to the addition of the p-DMDAAC.  
 
     
     
         38 . The process of  claim 36  wherein the trivalent metal salt is FeCl 3  (about 40% active raw material in water) in a volume of 10 parts, and the acid phosphorous compound is phosphoric acid (about 85 wt % in water) in a volume of 3 parts, the aluminum hydroxy chloride is Al 2 (OH) 5 Cl (about 50 wt % in water) in a volume of 5 parts, and: 
 (a) the FeCl 3  is diluted by 10 to 80% prior to the preparation of the composition and the subsequent addition of the p-DMDAAC; or  
 (b) the composition is diluted by 10 to 80% prior to the addition of the p-DMDAAC.  
 
     
     
         39 . A composition of matter comprising the product produced according to the process of  claim 28 .  
     
     
         40 . A process for treating a solution comprising contacting the solution with an effective amount of the composition of  claim 2 .  
     
     
         41 . A process for treating a solution comprising contacting the solution with an effective amount of the product produced according to the process of  claim 28 .  
     
     
         42 . The process of  claim 40  wherein the solution is selected from the group consisting of general wastewater, municipal wastewater, wastewater containing metals, papermaking wastewater, water containing organic compounds, water containing chemical compounds, water containing biological compounds, poultry processing waste, ink containing solutions, raw surface water, oil/water mixtures, colored solutions, coal waste, mineral processing water, oily waste, raw municipal drinking water, water containing suspended solids, water containing paint solids, electrolytic primer coating wastewater and industrial wastewater.  
     
     
         43 . The process of  claim 41  wherein the solution is selected from the group consisting of general wastewater, municipal wastewater, wastewater containing metals, papermaking wastewater, water containing organic compounds, water containing chemical compounds, water containing biological compounds, poultry processing waste, ink containing solutions, raw surface water, oil/water mixtures, colored solutions, coal waste, mineral processing water, oily waste, raw municipal drinking water, water containing suspended solids, water containing paint solids, electrolytic primer coating wastewater and industrial wastewater.  
     
     
         44 . The process of  claim 40  wherein the product is utilized in enhanced coagulation to reduce at least a portion of the total organic contaminants.  
     
     
         45 . The process of  claim 41  wherein the product is utilized in enhanced coagulation to reduce at least a portion of the total organic contaminants.