treatment efficiency, design factors and kinetic coefficients were studied using two pilots of activated sludge (as) and powdered activated carbon technology (pact), for treating tehran oil refinery effluent, in a duration of more than 12 months in order to evaluate the performance of each system against growth inhibitor shock loads, different concentrations of phenol and furfural (10-300 mg/l)...

Batik coloring still uses synthetic dyes, so the disposal of waste should not be careless. Most batik craftsmen process their by settling liquid for a long time. The is very ineffective. purpose this research to design processing tool that cheap and effective. method electrocoagulation method. an electrochemical water treatment. treatment consists five parts including: (1) Electrocoagulation Tu...

The article considers transport accidents on watercrafts in inland waterways, sea and ocean waters caused by unreliable operation of the main systems during ice shallow water conditions difficult for naviga-tion violations technical rules crew members. There are given statistical data causes water. Frequent breakdowns due to open (two-circuit) cooling system ship’s power plants stated. Open sys...

semi-aerobic leachate is characterized by organic matter (cod, bod) which is relatively low in concentration and difficult to biodegrade. in conventional treatment systems, the low biodegradability is attributed to partial stabilization of leachate at the landfill. biological treatment of leachate in malaysia is not well established and any important data for the treatment process is not availa...

chlorination of natural water containing humic compounds, produce significant amount of disinfectant by - products. the most important of such compounds are thlvis and halo acetic acids, suspected to cause cancer in animals and human. studies showed that under usual processes of water treatment plants, thms can not be removed effectively. since chlorination is the final process of treatment, it...

introduction: carbamazepine is commonly used in a variety of indications. poisoning by this drug, can lead to coma, seizures, cardiac disorders and respiratory distress. the treatment of poisoning is generally supportive. method: 68 poisoned patients with carbamazepine, who referred to poisoning ward of loghman hospital, from july 2003 to september 2004, were studied. these patients were invest...

this study focus on the preparation of two supports including activated carbon derived from medlar and palladium nanoparticles loaded on activated carbon (pd-np-ac). subsequently, both adsorbent modified with a novel schiff base chelating agent and their potential applicability for determination of trace amounts of metal ions from aqueous solution has been investigated. the method is based on c...

In this laboratory scale study, impregnated almond shell activated carbon was used as adsorbent to investigate its feasibility for nitrate adsorption from aqueous medium. The effects of activated carbon dosage and contact time have been examined in batch experiments. Experimental data show that impregnated activated carbons by Fe0, Fe2 (SO4)3, and FeSO4 were more effective than virgin almond ac...

This paper presents the results of an investigation on the effects of concentration of cations on activated sludge properties and membrane fouling in submerge membrane bioreactors. The working volume of the experimental setup was two liters. The cellulose acetate membrane was immersed in the bioreactor. The flocculability, settling properties and fouling propensity of activated sludge was measu...