Sludge dewatering tempering agent and method for sludge dewatering by utilizing same
A technology of sludge dewatering and conditioning agent, applied in the direction of dewatering/drying/concentrating sludge treatment, etc., can solve the problems that the ideal effect of sludge dewatering cannot be achieved, the concentration time is long, and the conditioning cost is high.
Inactive Publication Date: 2013-07-10
HUNAN PINZHU SCI & TECH DEV CO LTD
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Problems solved by technology
Most domestic sewage treatment plants use polyacrylamide or lime as sludge conditioning agent. The activated sludge discharged from the secondary settling tank is concentrated and then conditioned, and the conditioned activated sludge is directly sent to
Method used
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Embodiment 1
[0027] The inorganic polymer flocculant in this embodiment is polyaluminum ferric chloride, and the surfactant is cetyltrimethylammonium bromide.
[0028] Take 5 parts by weight of polyacrylamide, 25 parts of polyaluminum ferric chloride, 60 parts of fly ash and 10 parts of cetyltrimethylammonium bromide, and carry out mechanical mixing to make a mixed powder material, namely Obtain the sludge dewatering conditioner of the present invention.
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Abstract
The invention discloses a sludge dewatering tempering agent and a method for sludge dewatering by utilizing the same. The sludge dewatering tempering agent disclosed by the invention contains the following components in parts by weight: 0.2-8 parts of polyacrylamide, 5-35 parts of inorganic polymeric flocculants, 30-80 parts of coal ash and 5-30 parts of surfactants. The method comprises the steps of feeding the sludge dewatering tempering agent disclosed by the invention into a secondary sedimentation tank, and stirring and coagulating, directly carrying out centrifugal treatment on sludge flowing into a concentrating tank from the secondary sedimentation tank. The sludge dewatering tempering agent disclosed by the invention has the advantages that the flocculation capacity and the seepage force are strong, the sludge tempering effect is good, the moisture content of the sludge after tempering is low, the quantity reduction treatment of the sludge is realized, and the cost is low.
Description
technical field [0001] The invention belongs to the technical field of sludge treatment, and in particular relates to a sludge dehydration conditioning agent and a sludge dehydration method. Background technique [0002] The water content of sludge produced in sewage treatment plants is generally very high, so sludge dehydration is required to achieve reduction treatment, and the fluid sludge (with or without concentration) is converted into solid wet sludge. Conditioner for sludge dehydration and conditioning. The conditioning agents currently used in the sludge dewatering industry in my country can be roughly divided into two categories, one is inorganic conditioning agents, such as iron salts, aluminum salts, and polymer agents, and the other is organic conditioning agents , such as polyacrylamide conditioner. Most domestic sewage treatment plants use polyacrylamide or lime as sludge conditioning agent. The activated sludge discharged from the secondary settling tank is ...
Claims
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IPC IPC(8): C02F11/14
Inventor 栗频王金波王洋杨帆付红颜家旺李小平王子云王海红王琦王伟付军孙慧李啸李旭张腾李霞孙丹李继伟李婵华李鹏飞
Owner HUNAN PINZHU SCI & TECH DEV CO LTD
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