Production process for urban sewage water, sewage sludge dehydrating agent and method of use thereof
A technology of sludge dehydrating agent and urban sewage, which is applied in the direction of dehydration/drying/thickened sludge treatment, etc., and can solve the problem of high cost
Inactive Publication Date: 2009-07-29
河南省华星水务股份有限公司
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Problems solved by technology
[0002] The sewage and sludge generated in the city need to be separated, and the sludge is filtered with a filter press. The existing dehydrating agent is a polyacrylamide series flocculant, which has the disadvantage of high cost
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Experimental program
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Embodiment Construction
[0004] The production process of the sewage sludge dewatering agent of the present invention, (1) 0.2-0.5 ton concentration is 60-98% industrial sulfuric acid and 0.1-0.3 ton concentration is 10-30% industrial hydrochloric acid in the reactor and is heated up to 60 At -150°C, add 0.2-0.5 tons of active magnetite or talcum powder to react for 1 hour, (2) slowly drop 0.1-0.3 tons of sodium silicate solution with a concentration of 5-30% and 0.05-0.2 tons of hydrogen peroxide to oxidize 1 After 3 hours, stand still for 3 hours, (3) dry the above-mentioned standing supernatant into powdery dehydrating agent.
[0005] The method of dehydrating agent to treat urban sewage sludge in the production process of urban sewage sludge dehydrating agent, put the dehydrating agent powder in the tank with agitator, dilute it with clean water to a concentration of 20-50%, and slowly add sludge at room temperature , put on the filter press while stirring, the dehydration effect of the filter cak...
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The invention provides a process for producing an urban sewage sludge dehydrating agent and a method for using same. The invention relates to a sewage treatment agent, in particular to the process for producing the urban sewage sludge dehydrating agent and the method for using same. The invention aims to provide the process for producing the urban sewage sludge dehydrating agent and the method for using same with low cost. The technical proposal comprises the following steps: (1) mixing 0.2 to 0.5 weight portion of 60 to 98 percent industrial sulphuric acid with 0.1 to 0.3 weight portion of 10 to 30 percent hydrochloric acid, heating the mixture until the temperature is between 60 and 150 DEG C, and adding 0.2 to 0.5 ton of active magnetic clay or talcum powder into the mixture to react for 1 hour; (2) slowly dripping 0.1 to 0.3 weight portion of 50 to 30 percent sodium silicate solution and adding 0.05 to 0.2 weight portion of oxyful into the mixture to perform oxidation for 1 hour, and then standing the mixture stand for 3 hours; and (3) drying the supernatant liquid of the mixture after standing into a powder dehydrating agent. The dehydrating agent is applied to sewage sludge dehydration.
Description
Technical field: [0001] The invention relates to a sewage treatment agent, in particular to a production process and a use method of an urban sewage sludge dehydrating agent. Background technique: [0002] Sewage and sludge produced in the city need to be separated, and the sludge is filtered by a filter press. The existing dehydrating agent is a polyacrylamide series flocculant, which has the disadvantage of high cost. Invention content: [0003] The object of the present invention is to provide a low-cost production process of a municipal sewage sludge dewatering agent and its application method. The technical scheme of the present invention is: (1) after mixing 0.2-0.5 parts by weight of industrial sulfuric acid with a concentration of 60-98% and 0.1-0.3 parts by weight of hydrochloric acid with a concentration of 10-30%, when the temperature is raised to 60-150°C, add After reacting 0.2-0.5 tons of active magnetite or talcum powder for 1 hour, (2) slowly dropwise add ...
Claims
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IPC IPC(8): C02F11/14
Inventor 乔占印
Owner 河南省华星水务股份有限公司