RU2162823C1 - Agent for decontamination of sewage and tap water from helmininth eggs - Google Patents

Abstract

FIELD: treatment of natural water and sewage for decontamination and disinvasion purposes. SUBSTANCE: agent prepared from dried and crushed potato stems is used as highly efficient, ecological and economical agent. Said agent has high ovidical properties and is useful on cleaning structures and makes it possible to utilize safety sewage deposits. EFFECT: improved properties of the agent. 3 tbl

Description

 The invention relates to sanitary parasitology and can be used in utilities for the disinfestation of natural wastewater and its rainfall.

 Currently, in practice, for the disinfection of helminth eggs, chlorine-containing preparations, mainly bleach, are used in concentrations of at least 10% and highly toxic substances such as formalin, lysol, carol, methyl bromide, etc. (Turovsky I.S. status and development prospects of wastewater sludge treatment methods. "- M.: Stroyizdat, 1988, p.231).

 These substances are detrimental to both helminth eggs and the human and animal body.

 The closest of the analogues is the "Means for disinfecting wastewater and tap water from helminth eggs" (RF patent N 2062752). This preparation is made from dried seedlings of plants of the nightshade family (in particular, potato). Used in microdoses and not containing toxic components, it is able to provide deworming of wastewater, causing natural death of helminth eggs, without affecting the metabolism of activated sludge biocenosis. Deprived of the invasive properties of helminth eggs, which fall into the sediment and partially into the body of water, when wastewater is discharged and the sediments are disposed of, they do not pose an epidemiological danger and are not able to cause helminth infections in humans and animals.

 But the preparation made from potato sprouts has significant disadvantages: a low yield of the product with a large amount of feedstock, which makes it relatively expensive, and the cleaning effect is not very high.

 The objective of the invention is the use of a highly effective, environmentally friendly and economical drug for the disinfection of natural and waste waters, their rainfall and other objects.

 The problem is achieved by the fact that as an ovicidal agent use a preparation made from dried stems of potatoes - a representative of plants of the nightshade family.

 The product, made from dried and crushed potato stalks, is a greenish-brown powder that dissolves in water, is hygroscopic, and can be stored in airtight containers for more than 2 years, while maintaining ovicidal properties.

 Depending on the concentration, the drug has both an inhibitory and a stimulating effect, which is expressed either in a delay in the development of helminth eggs, or in their accelerated development, ensuring the release of their contents into the external environment with subsequent death.

 Example 1

The drug from the stems of potatoes is dissolved in 10 ml of tap water at a temperature of +21 ^o C. The experiments are carried out in dilutions of the drug -10 ^-6 - 10 ^-10 at an exposure of 6, 8 and 24 hours. As test objects, pork roundworm eggs are used - the most persistent in the external environment (at least 500-800 for each experiment). The drug has the same effect on pork and human roundworm eggs. The most optimal parameters for the use of the drug are: its dilution in 10 ^-7 -10 ^-9 per working volume of water and a contact time of at least 8 hours. The results are presented in table 1.

 Example 2

The action of the drug by analogy with the above example 1 is determined in wastewater (table 2). The drug is introduced into the waste water receiving chamber at a dilution of 10 ^-6 - 10 ^-10 for the entire volume of effluents. When the contact time of the drug with wastewater is at least 8 hours, they are dewormed. As a result, eggs with a disrupted cycle of natural development enter the sewage sludge and after a month they die. Additional introduction of the drug into the sewage sludge is not required.

 Example 3

A preparation made from potato stalks is introduced into the receiving chamber of treatment facilities at a dilution of 10 ^-6 -10 ^-10 per volume of wastewater (table 3).

 Contact time with drains - 8 hours. Before starting the experiments, 5 sediment samples were taken from silt sites. A month after the end of the experiments, after discharging the sediments of the disinfected wastewater to silt sites, another 5 samples were taken.

 Prior to the experiments, in sediments, in terms of 1 cubic meter, 9.7 to 2.6 + 1.4 helminth eggs were contained, of which 1.7 - 0.3 were viable. After conducting experiments, viable eggs were not found. The indicators are given in terms of 1 cubic meter. draft.

The proposed preparation, made from dried and crushed potato stems, exhibits high ovicidal properties when exposed to helminth eggs in tap and waste water in optimal dilutions of 10 ^-7 -10 ^-9 and exposure of at least 8 hours.

 The advantage of the new ovicidal preparation is that this substance is non-toxic; large masses of potatoes are not required to produce it. So, according to the prototype, with 1 kg of potatoes, the yield of a preparation based on sprouts is 100-150 g, and with 1 kg of potatoes, the yield of a preparation based on stems is 500 - 600 g. When treating wastewater and neutralizing the solid phase, the technology of application of the drug fits easily and is consistent with the scheme of existing treatment facilities.

 The drug, which has high ovicidal properties, can be used to disinfect epidemiologically significant environmental objects, its ability to disinfect natural and waste water from helminth eggs makes it possible to use it in sewage treatment plants and in the long term solve the problem of utilizing sewage sludge.

Claims (1)

 The use of dried potato stems as a means for disinfecting wastewater and tap water from helminth eggs.

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