Preparation method for composite sewage treatment agent
A technology of sewage treatment agent and complexing agent, which is applied in the direction of water/sewage treatment, neutralized water/sewage treatment, water/sludge/sewage treatment, etc., which can solve the problem of increased maintenance costs, increased floor space, and difficulty in adapting Dealing with requirements and other issues to achieve the effect of reducing processing costs and eliminating equipment maintenance costs
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[0034] A preparation method of composite sewage treatment agent, comprising the following steps:
[0035] Add divalent metal salts and trivalent metal salts into the reactor at a mass ratio of 1:3-1:9, slowly add the catalyst under stirring, react at a temperature of 185-190°C, and cool to 50-60°C Perform cooling treatment to obtain a liquid product with a pH value of 8-10, filter the liquid product to obtain an intermediate product, add the intermediate product to the reactor, slowly add a complexing agent under stirring, stir evenly, and then slowly add a stabilizer, Under the temperature condition of 50-60 DEG C, the composite sewage treatment agent can be obtained by reacting to reach a pH value of 8-10.
[0036] Preferably, the reaction is carried out at a temperature of 185-190°C, and the reaction is carried out at a temperature of 50-60°C to reach a pH value of 8-10. At this time, the density of the substance formed after the reaction is 1 g / cm 3 .
[0037] In terms o...
Embodiment 1
[0044] Add the divalent metal salt and trivalent metal salt into the reactor at a mass ratio of 1:3, and slowly add the catalyst under stirring (the amount of catalyst accounts for 0.05‰ of the total mass of the divalent metal salt and trivalent metal salt) , react at a temperature of 185-190°C, cool to 50-60°C for cooling treatment, and obtain a pH value of 8 and a density of 1g / cm after the reaction 3 The liquid product, the liquid product is filtered to obtain the intermediate product, the intermediate product is added in the reactor, and the complexing agent that the consumption amount accounts for 1.0% of the quality of the intermediate product is slowly added under stirring, the stirring is uniform, and then the consumption amount is slowly added Accounting for 0.05‰ of the mass of the intermediate product, the stabilizer is reacted at a temperature of 50-60°C to obtain a pH value of 10 and a density of 1g / cm 3 The composite sewage treatment agent was prepared to obtain ...
Embodiment 2
[0046] Add the divalent metal salt and trivalent metal salt into the reactor at a mass ratio of 1:6, and slowly add the catalyst under stirring (the amount of catalyst accounts for 0.1‰ of the total mass of the divalent metal salt and trivalent metal salt) , react at a temperature of 185-190°C, cool to 50-60°C for cooling treatment, after the reaction, the pH value is 10, and the density is 1g / cm 3 Liquid product, the liquid product is filtered to obtain the intermediate product, the intermediate product is added in the reactor, under stirring, slowly add the complexing agent whose consumption accounts for 1.5% of the quality of the intermediate product, stir evenly, then slowly add the dosage Accounting for 0.1‰ of the mass of the intermediate product, the stabilizer is reacted at a temperature of 50-60°C to obtain a pH value of 8 and a density of 1g / cm3 The composite sewage treatment agent was prepared to obtain composite sewage treatment agent No. 2.
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