Microbial sludge dehydrating agent and preparation method thereof

Abstract

The invention discloses a microbial sludge dehydrating agent and a preparation method thereof. The sludge dehydrating agent comprises an acidophilic bacteria solution, an aspergillus tubingensis solution, a bacteria secreted extracellular enzyme solution, a lysozyme solution, polyacrylate, wood cellulose, tourmaline powder, a polyacrylamide solution, a sludge stripping agent solution, a sludge wall breaking agent solution and a sludge surface structure modifier solution. By adding the acidophilic bacteria solution, the aspergillus tubingensis solution, the bacterial secreted extracellular enzyme solution and the lysozyme solution, under the combined action of acidophilic bacteria, aspergillus tubingensis, bacterial secreted extracellular enzyme and lysozyme, the adsorption and wrapping effects of sludge extracellular polymeric substances on water can be thoroughly destroyed, so that the sludge is easier to dehydrate, and the water content is reduced. And the biological cell wall structure in the sludge can be destroyed, so that the sludge floc structure is thoroughly disintegrated, water in the sludge can be fully released, and the purpose of deep dehydration of the sludge is achieved.

Description

technical field [0001] The invention relates to a dehydrating agent, in particular to a microbial sludge dehydrating agent and a preparation method thereof, belonging to the technical field of dehydrating agents. Background technique [0002] A sludge treatment method that removes water from fluidized primary, concentrated or digested sludge and converts it into semi-solid or solid sludge. After dehydration, the moisture content of the sludge can be reduced to 55% to 80%, depending on the nature of the sludge and sediment and the efficiency of the dewatering equipment. The further dehydration of sludge is called sludge drying, and the moisture content of dried sludge is less than 10%. Dehydration methods mainly include natural drying method, mechanical dehydration method and granulation method. Natural drying method and mechanical dehydration method are suitable for sewage sludge. The granulation method is suitable for coagulation and sedimentation of sludge. [0003] At...

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Problems solved by technology

[0003] At present, the most commonly used sludge dewatering agent is cationic polyacrylamide (CPAM). Although CPAM has a good sludge dewatering effect, its shortcomings of being used as a sludge dewatering agent in large quantities are increasingly apparent. It is difficult to degrade, causing secondary pollution to the environment, and a large amount of organic solvents such as surfactants used in the CPAM synthesis process will also pollute the environment. Chinese patent No. CN201510987557.3 discloses a composite biological sludge dewatering agent The preparation method of the present invention uses bovine serum albumin, kanamycin, etc. as screening nutrients, screens out the target strain from the remaining sludge, and then cultivates it to obtain a composite biological sludge dehydrating agent base liquid, and then Pyrite slag is treated with acid and alkali, and the treatment liquid is reacted with sodium silicate to form a composite biological sludge dehydrating agent matrix, which is then mixed with the base liquid of the composite biological sludge dehydrating agent; The extraction steps are relatively complicated, and the enzyme products are easily inactivated, which increases the cost of the sludge dewatering agent. Therefore, it is currently the research topic to find a dehydrating agent that has good sludge dewatering performance, is friendly to the environment, and is easy to prepare. hotspot